[c-nsp] /31 on a PTP Ethernet interface

sthaug at nethelp.no sthaug at nethelp.no
Mon Mar 8 15:21:29 EST 2010


> Ethernet is not designed for p2p but can be used for this purpose.
> OSI allow any L3 over L2 Ethernet, there is no issue with IPv4 @

Sure. And we use Ethernet as point to point technology too. However,
that is an entirely different statement than saying that /31 is "well
supported" on Ethernet.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no

> 2010/3/8, sthaug at nethelp.no <sthaug at nethelp.no>:
> >> You needn't /30 anymore, rfc3021 is well suported for a while ;)
> >
> > Yes, RFC 3021 is well supported on *actual* point to point links (e.g.
> > SDH/SONET). Ethernet is *not* such a type of link.
> >
> > There are lots of people who use /31 on Ethernet links without any
> > apparent problems. However ...
> >
> > Some of us have tried (hard) to get Cisco and Juniper to come forward
> > with an official statement about whether /31 is supported or not on
> > Ethernet links. We have been entirely unsuccessful - the answer we
> > receive is always of the type "try it, it may work for you". That is
> > not "well supported" by my definition of the word.
> >
> > Steinar Haug, Nethelp consulting, sthaug at nethelp.no
> >
> 
> -- 
> Envoyé avec mon mobile
> 



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